Main.java Source code

Introduction

Here is the source code for Main.java

Source

//Code revised from Learn JavaFX 8
//http://www.apress.com/9781484211434

import javafx.application.Application;
import javafx.geometry.Point2D;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Circle;
import javafx.stage.Stage;

public class Main extends Application {
    Circle marker;

    public static void main(String[] args) {
        Application.launch(args);
    }

    @Override
    public void start(Stage stage) {
        TextField fName = new TextField();
        TextField lName = new TextField();
        TextField salary = new TextField();

        marker = new Circle(5);
        marker.setManaged(false);
        marker.setFill(Color.RED);
        marker.setMouseTransparent(true);

        HBox hb1 = new HBox();
        HBox hb2 = new HBox();
        HBox hb3 = new HBox();
        hb1.getChildren().addAll(new Label("First Name:"), fName);
        hb2.getChildren().addAll(new Label("Last Name:"), lName);
        hb3.getChildren().addAll(new Label("Salary:"), salary);

        VBox root = new VBox();
        root.getChildren().addAll(hb1, hb2, hb3, marker);

        Scene scene = new Scene(root);

        scene.focusOwnerProperty().addListener((prop, oldNode, newNode) -> placeMarker(newNode));

        stage.setScene(scene);
        stage.setTitle("");
        stage.show();
    }

    public void placeMarker(Node newNode) {
        double nodeMinX = newNode.getLayoutBounds().getMinX();
        double nodeMinY = newNode.getLayoutBounds().getMinY();
        Point2D nodeInScene = newNode.localToScene(nodeMinX, nodeMinY);
        Point2D nodeInMarkerLocal = marker.sceneToLocal(nodeInScene);
        Point2D nodeInMarkerParent = marker.localToParent(nodeInMarkerLocal);

        marker.relocate(nodeInMarkerParent.getX() + marker.getLayoutBounds().getMinX(),
                nodeInMarkerParent.getY() + marker.getLayoutBounds().getMinY());
    }
}